Universal Air Cleaner Assembly; Flange-2.5 in.; B-5 3/8 in.; T-4 5/8 in.; L-5 in.; Whether you have a custom application or simply want to upgrade another brand intake system with AIRAID®’s superior filter technology, you are sure to find a universal AIRAID® Premium Filter for your needs. AIRAID® filters and breathers come in a variety of shapes and styles to suit more applications.